Burr picker



July 2l, 1925.

A. C. SARGENT ET AL BURR PICKER Filed Oct .1, 1924 l f l c l c /a'y maar:

Patented July 2l, 1925,.

`Urxlrrzo STATI-:s

P AT ENT OFFICE..

.antan c. snnennr arm renna t. nuancer-r, or `vvnsrr.on-n, Messner-lustres les sroNoRs To c. e. sAnc-nnrs sons celeron-Arron, or GRANITEVILLE, MASSACHU- snrrs, A oonroearron or MASSACHUSETTS.

BURR PICKER.

Application inea october 1, 1924. serial No. 741,028.

To all whom t may concer/n:

Be it known that we, ALLAN C. SARGENT and FRANK L. FURUsrr, both citizens of the United States, residing at llestliord, in the county of Middlesex and State of Massachusetts, have invented a new and uset'ul Burr Picker, o1 which the following is a specification. Y

This invention relates to a Aburr picker and although capable of general use it is especially adaptable to the so-called inultipleX burr picker which has been on the mar,- rket for a `good many years and it is shown in the accompanying drawing as applied thereto.

The principal objects ot the invention are to provide adjustable means adjacent to 'the brush of such a machine to prevent the air draft from pulling the stock back around the brush, this means being made adjustable to provide torthe wear on the ends ot the brushbristles; to provide adjustable detiecting means located at either side ot the upper burr separator to prevent small shives and tlyings from the stock being carried around `by the burr separator and deposited on the other side of the adjacent burr cylinder so as to be allowed to go through with `the linished stock, but at the same time. to arrange the deflector so thata certain amount of air can be taken in at this point; to pro vide a steel cut-od or defiector at the side ot the burr receptacle adjustable so vas to leave y an opening of the proper size to insure that th-e larger and heavier burrs when knocked olf the stock by the second burr separator will be discarded and allowed to slide down `out of the machine; and to provide a regis ter over the second burr separator tor regulating the amount of air that canV be taken in pastthat separator to help impale the stock on the second burr cylinder.

Other objects and advantages ot the in# vention will appear hereinafter.

Reference is to be vhad to the accompanying drawing, which is a longitudinal central `sectional .view of a multiplex burr picker with a preferred.embodiment ot this invention applied thereto. j

` The invention is shown, as stated, as applied to a type of burr pickerin which the Vwool. or other nstock is ted into the machine on a `'leed apron. 10 against the main cylinder 11. The wool is throughly Apicked the surface.

and subdivided in its transfer from one to the other. The stock is carried downward by the main cylinder over a bottom rack 12 where the impurities, such as shives, oats, straws and the like, loosened by the opening action, are thrown out `by centrifugal force and sitted throughthe rack into the ulower I burr separator 16 which has the same elect as the first one but on the other side of the stock. The stock is carried along on the cylinder 15 to the brush 17 where it is delivered from the machine inthe usual way. What has been described in this paragraph is old in this art.

It will be understood, of course, that one oi the cleaning operations is performed by a tan or blower 18 located at the topl ot the picker or by securing the same result by means ot aregular air intake at 'that point. The intake is located just over the second burr separator 16 in the form shown, but it can be applied to the only burr separator oit one type of picker in accordance with the present invention. A. pair of adjustable steel cut-offs or deflectors 20 and 21 are provided secured to the intake at either side ot it and of the burr separator 16. They extend throughout the width of the intake. This is tor the purpose of preventing` the small shives and flyings taken up by this Aburr separator' from being carried around by it and deposited back on the burr cylinder 15. The deiiector 21 on the forward side is set `farther away from the burr separator than thedetlector 2O so as to allow a certain amount of air to be taken in at this 4point past the burr separator.

Th-e amount ot air passing through is regulated by a register 22 located over the burr separator 16 and controlling the amount ot air passing through. It consists ot two ,perforated plates of ordinary form, oneI of them rotatable to vary 'the openings 23. Therefore it controls the force with which the stock is impaled on the burr cylinder 15, this being one of the functions of the draft of a-ir through the picker.

The burrs thrust olf by the second burr separator pass into the burr receptacle 25 which has a slanting floor 26 extending up to a point nearly between and tangent to the two cylinders 15 and 16. On the upper end of this inclined ioor is located an adjustable cut-off 27 consisting of a piece of steel extending across the whole length of the cylinders. This is adjusted so as to leave an opening of the proper size so that the larger and heavier burrs knocked ott the stock by the second burr separator 1G will be retarded and allowed to slide down the incline 26. Here t-hey land on the bottom from which they are taken away by a conveyor 28. This bottom 26 is inclined at a lsteep enough angle so that the burrs that are expelled from the wool and deposited on it slide down easily by gravity without the employment of mechanical means for causing them to do so.

At the delivery end of the machine we also provide an adjustable steel cut-off plate 30 `which is secured to the picker inside the top of the outlet spout and is adjustable radially toward the brush 17. This cuts olf the circulation of air outside the brush and detlects it through it and it is adjustable toward the brush as the tips of the bristles wear off to avoid the appearance of a wide space through which the air draft would pull the stock back around the brush. y

- The cut-offs or deflectors 27 and 30 extend throughout the width of the machine and the length of the cylinders.

The sides of the machine are constructed so that the bearings can bc either ball bearings or babbitted bearing boxes.

One of the cleaning actions which is an important feature of the old burr pickers is caused by the exhaust fan 18 or some equivalent means of creating a strong air current lwhich passes constantly into and through the burr picker. On account of this suction the dust and other impurities of a similar character are extracted from the wool as it is passing through thc various parts of the machine, taken up into the top of the machine and deposited in a dust receiver, not shown. This cleaning action talles place practically throughout the course of the wool through the machine because of the attenuated condition ot the lap on the main cylinder and, in fact, all the way through. lt is very largely for regulating this current of air that most of these improvements are made. They all have to do with the course of the current, as has been stated.

Although we have illustrated and rdescribetL only a single form of the invention a -fl shown it as applied only toa single type of burr picker we are aware of the fact that modifications can be made therein and that it can be applied to other types of burr pickers without departing from the scope of the invention as expressed in the claims. Therefore we do not wish to be limited to all the details of construction herein shown and described or to the particular type of burr picker illustrated, but what we do claim is 1. In a burr picker, the combination with a burr cylinder, a burr separator associated therewith, an air inlet to the top of the machine located directly over the burr separator, and means for drawing the air into the machine through said inlet, of a cut-off or deiiector extending down on the side of the burr separator and spaced from the circumference of the separator to adimt a. certain amount of air past the separator, and means in the inlet above the burr separator for regulating the amount of air admitted.

2. Tn a burr picker, the combination with a burr cylinder, a burr separator associated therewith, an air inlet to the top of the machine located directly over the burr separator, and means for drawing the air into the machine through said inlet, of a cut-off or deflector on each side of the burr separator extendig along the same parallel with each other, that on one side being spaced farther from the circumference of the separator than the other, whereby practically all the air passing through the inlet must pass by the burr separator, a receptacle for receiving the burrs from the burr separator, said receptacle having a slanting bottom extending up substantially to the bottom of the burr separator for receiving the burrs and delivering them, and an adjustable plate fixed to the upper end of said bottom to reduce the space between the bottom andthe burr cylinder.

3. ln a. burr picker, the combination with a burr cylinder and burr separator and means .for drawing the air through the machine from the vicinity of the burr separator, of a receptacle in position for receiving the burrs cast out by 'the burr separator having a slanting bottom extending up substantially to the bottom of the burr separator and provided with an adjustable plate on the end for regulating and controlling the space between the burr cylinder and the slanting bottom and controlling the air currents passing` through said space.

4L. .ln a burr picker, the combination with a burr cylinder, a burr separator associated therewith, an air inlet from the top of the machine located adjacent to the burr separator, and a fan or blower withdrawing the air from the machine at a point on the other side of said cylinder from said inlet, of a cut-olf or deliector on each side of the burr separator extending along the same parallel llt) with each other, that on one side being spaced farther from the circumference of the separator than the other to admit a certain amount of air past the separator, a brush for receiving the lap from the burr cylinder and delivering it from the machine, and an adjustable cut-off plate located at the` outlet of the machine adjacent to the circumference of said brush for the purpose of preventing currents of air induced by said fan or blower pulling the stock back around the brush.

5. In a burr picker, the combination with a burr cylinder, a burr separator associated therewith, an air inlet from the top of the machine located adjacent to the second burr separator, and a fan or blower for withdrawing the air from the machine, of a brush for receiving the lap from the burr cylinder and delivering it from the machine, and an adjustable cut-olf plate located at the outlet of the machine adjacent to the circumference of said brush for the purpose of preventing currents of air induced by said fan or blower pulling the stock back around the brush.

In testimony whereof we have hereunto aliixed our signatures.

ALLAN C. SARGENT. FRANK L. FURBUSH. 

